In this study, the AC impedance measurements have been used to characterize the monocrystalline silicon solar cell device under dark and illumination conditions. AC impedance measurements in the illuminated conditions are analyzed to identify the electronic behavior through equivalent AC circuit representation in terms of lumped parameters obtained by fitting the measured impedance data. The angle impedance phase increases from negative to positive values with increasing illumination conditions. The real part Z′ of the complex impedance value is typically higher at the dark light in the low-frequency region. It decreases gradually with increasing frequency reaching a plateau demonstrating independence on illumination at high frequencies. Nyquist plots exhibited a semicircle associated with the bulk single-crystalline body, and an additional spike is distinguishable at high frequency. The AC electrical conductivity is changed under dark and illumination conditions. Finally, the studied solar cell shows a highly sensitive light impedance response suggesting its suitability for use in photosensor applications.

在这项研究中，交流阻抗测量已用于表征在黑暗和光照条件下的单晶硅太阳能电池器件。分析在光照条件下的交流阻抗测量值，以等效交流电路表示形式识别电子行为，该等效交流电路表示形式是通过拟合测量阻抗数据而获得的集总参数。随着照明条件的增加，角阻抗相位从负值增加到正值。实部Z'在低频区域中的暗光处，复数阻抗值的典型值较高。它随着频率增加而逐渐减小，并达到平稳状态，这表明在高频下照明具有独立性。奈奎斯特图显示出与大块单晶体相关的半圆，并且在高频下可以分辨出一个额外的尖峰。交流电导率在黑暗和光照条件下会发生变化。最后，所研究的太阳能电池显示出高度敏感的光阻抗响应，表明其适用于光传感器应用。